For company A:
FV = Rs. 2, premium = Rs.18,
Number of shares = 200
∴ MV = FV+ Premium
= 2 + 18
= Rs.20
Sum invested = Number of shares × MV
= 200 × 20
= Rs.14000
For company B:
MV = Rs.500, Number of shares = 45
Sum invested = Number of shares × MV
= 45 × 500
= Rs.22,500
For company C:
MV = Rs. 10,540, Number of shares
= 1 x 10540
∴ Sum invested = Number of shares × MV
= 1 × 10540
= Rs. 10,540
∴ Total investment of Joseph = Investment for company A + Investment for company B + Investment for company C
= 4000 + 22,500 + 10,540
= Rs. 37040
∴ Total investment done by Joseph is Rs. 37,040.